The writing process for the majority of Metallicaâs albums have followed the same process. A large slew of guitar riffs written primarily by James Hetfield, sometimes Kirk Hammett, and rarely the bandâs bass player, (that now being bass virtuoso Robert Trujillo) are reviewed and selected.
1 Delhi is most polluted city in the world in PM2.5 concentrations. 2  Half of the top 20 most polluted cities were in India, according to data.  PM2.5 is considered most harmful to health.
But as foul as it is, Beijing's air isn't even China's worst: That dubious honor goes to ÃrÃ¼mqi Ã¼rÃ¼mqi in the'country s far, west which frequently joins Other chinese cities Like lanzhou And linfen on lists of the'world s most polluted. [ Places top 10 ways To Destroy ]. earth